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Finding the Fourth Proportional to 702,774.36, 969,810.66 and 392,679.36

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Solution

The fourth proportional to 702,774.36, 969,810.66 and 392,679.36 is: 541,887.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,774.36 : 969,810.66 = 392,679.36 : x
  2. Step 2: Convert to fraction form
    702,774.36/969,810.66 = 392,679.36/x
  3. Step 3: Cross multiply
    702,774.36x = 969,810.66 × 392,679.36
  4. Step 4: Simplify right side
    702,774.36x = 380,824,629,289.98
  5. Step 5: Solve for x
    x = 380,824,629,289.98/702,774.36
  6. Step 6: Final answer
    x = 541,887.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.